AutoLISP is a programming language that allows AutoCAD users to create programs to
customize AutoCAD. It is one of the simplest programming languages to learn and use. AutoLISP is useful for 2 main
reasons. AutoLISP can automate repetitive procedures and it can also be used to create completely new commands, from
simple to complex calculations and for creating completely finished drawings. Because AutoLISP is an interpreted
language rather than a compiled language, a program can be written, saved in a plain ASCII text file, and then loaded
into memory inside AutoCAD. Once a program has been loaded, it can be run from the command prompt, a pull down menu or
tool bar. AutoCAD has a built in editor called Visual LISP (VLIDE command) interactive development environment program.